2066435543 has 4 divisors (see below), whose sum is σ = 2086498128. Its totient is φ = 2046372960.

The previous prime is 2066435537. The next prime is 2066435557. The reversal of 2066435543 is 3455346602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2066435543 - 2²² = 2062241239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2066435497 and 2066435506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066435443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10031138 + ... + 10031343.

It is an arithmetic number, because the mean of its divisors is an integer number (521624532).

Almost surely, 2^2066435543 is an apocalyptic number.

2066435543 is a deficient number, since it is larger than the sum of its proper divisors (20062585).

2066435543 is a wasteful number, since it uses less digits than its factorization.

2066435543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20062584.

The product of its (nonzero) digits is 259200, while the sum is 38.

The square root of 2066435543 is about 45458.0635641247. The cubic root of 2066435543 is about 1273.7199595687.

The spelling of 2066435543 in words is "two billion, sixty-six million, four hundred thirty-five thousand, five hundred forty-three".